CVE-2021-27140 in the critical feed json
An issue was discovered on FiberHome HG6245D devices through RP2613.
published 2021-02-10 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-13907
- cvss
- 7.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 19.1%
- EPSS 19.1% chance of exploitation in 30 days, percentile 97%
- public exploits
- 0
- none known
Summary
An issue was discovered on FiberHome HG6245D devices through RP2613. It is possible to find passwords and authentication cookies stored in cleartext in the web.log HTTP logs.
Exploit prediction
19.08% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- pierrekim.github.io https://pierrekim.github.io/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#httpd-passwords-logs referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
| NVD | 2.0 | 5.0 | AV:N/AC:L/Au:N/C:P/I:N/A:N |
Classification
- Weakness
-
- CWE-312 Cleartext Storage of Sensitive Information
References
-
pierrekim.github.io
/blog/2021-01-12-fiberhome-ont-0day-vulnerabilities.html#httpd-passwords-logs
exploit, third-party-advisory
Sources
- CVE List CVE-2021-27140
- NVD CVE-2021-27140
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.